Patents by Inventor Tokiko Hashimoto

Tokiko Hashimoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical-thin-film material, process for its production, and optical device making use of the optical-thin-film material
    Patent number: 6327087
    Abstract: An optical-thin-film material comprising a metal oxide containing samarium and titanium, or having a compound represented by the following chemical formula: Sm1−xAl1+xO3 wherein −1<x<1 is disclosed. An optical device having an optical thin film formed of such a material is also disclosed. This optical-thin-film material does not cause any compositional deviation to enable continuous deposition when used as a vacuum deposition material, and does not cause any deterioration due to ultraviolet-light irradiation.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: December 4, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tokiko Hashimoto, Takahiro Kato